CDP1855C Datasheet Preview

CDP1855C Datasheet

8-Bit Programmable Multiply/Divide Unit

No Preview Available !

CMOS Peripherals - - - - - - - - - - - - - - - - - - - - - - - - - - -

CDP1855, CDP1855C

CLEAR

ell

co/OF

mnn

elK

ST8

ROI'W"E:

RA 2

RAI

RAil

VSS

28 Vee

27 CNe

cr26 CN I

4 25

5 24 YR

6 23 ZR

7 22 BUS 7

8 21 BUS 6

9 20 BUS 5

10 19 BUS 4

II 18 BUS 3

12 17 BUS 2

13 16 suS I

14 15 BUSg

TOP VIEW

92CS- 2996!5R2

TERMINAL ASSIGNMENT

8-Bit Programmable

Multiply/Divide Unit

Features:

• Cascadable up to 4 units for 32-bit by 32-bit multiply or64 -7- 32 bit divide

• 8-blt by 8-bit multiply or 16 -7- 18 bit divide in 5.6 jJs at 5 Vor 2.8 jJs at 10 V

• Direct interface to CDP1800 series microprocessors

• Easy interface to other 8-bit microprocessors

• Significantly increases throughput of microprocessor used for

arithmetic calculations

The RCA-CDP1855 and CDP1855C are CMOS 8-bit

multiply/divide units which can be used to greatly increase

the capabilities of 8-bit microprocessors. They perform

multiply and divide operations on unsigned, binary

operators. In general, microprocessors do not contain

multiple or divide instructions and even efficiently coded

multiply or divide subroutines require considerable memory

and execution time. These multiply/divide units directly

interface to the CDP1800 series microprocessors via the

N-lines and can easily be configured to fit in either the

memory or I/O space of other 8-bit microprocessors.

The multiple/divide unit is based on a method of multiplying

by add and shift right operations and dividing by subtract

and shift left operations. The device is structured to permit

cascading identical units to handle operands up to 32 bits.

The CDP1855 and CDP1855C are functionally identical.

They differ In that the CDP1855 has a recommended

operating voltage range of4 -10.5 volts, and the CDP1855C,

a recommended operating voltage range of 4 - 6.5 volts.

The CDP1855 and CDP1855C types are supplied in a 28-

lead hermetic dual-in-line ceramic package (D suffix) and

in a 28-lead dual-in-line plastic package (E suffix). The

CDP1855C is also available in chip form (H suffix).

1 +v

CLEAR

XTAl

•CLEAR

ClK

NO RAO CI

NI RAI CNO

N2 RA2 CNI

TPB STB

MRD RD/WE

CDPI802

E YL CDPI855

CTl

BUS

C YR

BUS

Is 92CM-34331

FIg. 1 - CIfCUlt confIguratIOn for MDU addressed as an 110 deVIce.

File Number 1053

404 ____________________________________________________________

CDP1855C Datasheet Preview

CDP1855C Datasheet

8-Bit Programmable Multiply/Divide Unit

No Preview Available !

- - - - - - - - - - - - - - - - - - - - - - - - - - CMOS Peripherals

CDP1855, CDP1855C

MAXIMUM RATINGS, Absolute-Maximum Values:

DC SUPPLY-VOLTAGE RANGE, (VDD)

(Voltage referenced to VSS Terminal)

CDPI855 ................................................................. " ..................................... -0.5 to +11 V

CDPI855C ....••..••....•..•.......•......•...•••.....••..•..••.•..••..••..•...••....•••....•••••••.•••••••.••••• -0.5 to +7 V

INPUT VOLTAGE RANGE, ALL INPUTS •...•..•••..•••...•••.•.•.•••.•.....••...••...•••.•..•....•••••.....•••• -0.5 to VDD +0.5 V

DC INPUT CURRENT, ANY ONE INPUT ..•••.••••..••..•.••..•...••....•...••...•....•••••. '" .•.•••••.•••••••••••••••••• ±10 mA

POWER DISSIPATION PER PACKAGE (PD):

For TA = -40 to +60·C (PACKAGE TYPE E) .............................................................................. 500 mW

ForTA = +60 to +85·C (PACKAGE TYPE E) ••....••..•••...•..••.••••..•..•....••..•.•••••• Derate Lineary at 12 mW/·C to 200 mW

For TA = -55 to 100· C (PACKAGE TYPE D) .............................................................................. 500 mW

For TA = +100 to +125·C (PACKAGE TYPE D) ............................................. Derate Lineary at 12 mwrc to 200 mW

DEVICE DISSIPATION PER OUTPUT TRANSISTOR

For TA = FULL PACKAGE-TEMPERATURE RANGE (All Package Types) .................................................. 100 mW

OPERATING-TEMPERATURE RANGE (TA):

PACKAGE TYPE D ......•........•..••.•••...•••..•..••....••.•..••.....•.....••..•....•..•••...•..•.•••...••••.. -55 to +125·C

PACKAGE TYPE E ......•.......••..•......•.••..••..•.....••••.•••.••.••..•••.......•..••••...........•....••••.••-40 to +85·C

STORAGE TEMPERATURE RANGE (Tstg) .......................................................................... -85 to +150·C

LEAD TEMPERATURE (DURING SOLDERING):

At distance 1116 ± 1/32 inch (1.59 ± 0.79 mm) from case for 10 s max...................................................... +265·C

STATIC ELECTRICAL CHARACTERISTICS at TA = -40 to +85°C, VDD ± 10%, Except aa noted

CONDITIONS

CHARACTERISTIC

Vo VIN VDD

Quiescent Device

Current

(V) (V) (V)

- 0,5 5

100 -

0, 10 10

Output Low Drive

0.4 0,5

(Sink) Current

1m 0.5 0, 10 10

Output High Drive

4.6 0,5

(Source) Current

Output Voltage

IOH 9.5 0,10 10

- 0,5 5

Low-Level

Output Voltage

High Level

Input Low

Voltage

Input High

Voltage

Input Leakage

Current

Vall

VOH±

0.5,4.5

VIL 0.5,9.5

0.5,4.5

VIH 0.5,9.5

liN -

0, 10

0,5

0, 10

0,5

0, 10

3-State Output Leakage

0,5 0,5

Current

lOUT 0, 10 0, 10 10

Operating Current

1001# -

U,lI

0, 10

Input Capacitance

CIN

Output Capacitance

COUT

LIMITS

CDP1855

CDP1855C

Min. Typ.- Max. Min. Typ.- Max.

- 0.D1 50

0.02 200

- -1 200 - -

1.6 3.2

-2.6 5.2 - - -

' -1.15 -2.3

- -1.15 1-2.3

-2.6 -5.2

0 0.1

- -0 0.1 - -

-4.9 5

4.9 5

-9.9 10 - - -

- - 1.5 -

1.5

- - 3-- -

3.5 -

- -3.5

7- --- -

±1 ±1

- - -±1 - -

±1 ±1

- - -±10 - -

- - - -"1.1I

6 12

1.0

5 7.5

10 15

lU III

UNITS

lEI

-Typical values are for TA = 25° C and nominal VDD.

#Operating current is measured at 3.2 MHz with open outputs.

:j:IOL =IOH =lpA.

_________________________________________________________________ 405

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf

CDP1855C Datasheet

8-Bit Programmable Multiply/Divide Unit

CDP1855C Datasheet

8-Bit Programmable Multiply/Divide Unit

Similar Datasheet

Part Number Start With